Year 2010 = 100 1971 2.45963716854472 1972 2.62879984944583 1973 2.71367589839084 1974 3.2252898601227 1975 3.55005863076714 1976 3.70112495548063 1977 4.02004275209801 1978 4.27181995995384 1979 4.6159154773568 1980 5.22018077621078 1981 6.07622328292058 1982 6.86512520086884 1983 7.29314645422374 1984 8.09883351936238 1985 8.87374781465195 1986 10.0780821255623 1987 11.1859018401279 1988 13.0581451329892 1989 15.008019731606 1990 16.3193593558551 1991 18.7754442807064 1992 20.7940224050411 1993 22.7005561048534 1994 25.7097492206017 1995 28.1853974576713 1996 31.5040466030533 1997 34.05083415728 1998 38.2729686369045 1999 41.3426017165095 2000 44.6043518575463 2001 47.6935767050965 2002 52.9063101697882 2003 57.2813781749542 2004 61.2829647650451 2005 65.7754126435205 2006 73.1554054054054 2007 78.7635135135135 2008 92.4054054054054 2009 98.9594594594595 2010 100 2011 107.34270706018 2012 113.688814368881 2013 119.818192049045 2014 126.007882882883 2015 125.284006297329 2016 125.926068821616 2017 126.541452847665 2018 130.921653412479 2019 133.062033185591 2020 137.005392964625 2021 136.847236823755 2022 144.398644275693 2023 152.897744832961